<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>01内嵌JavaScript</title>
</head>
<body>
</body>
<script>
    // 弹出窗
    alert("你好！中国！");
    /*
    这个是多行注释
    */
    alert("Hello World");
    // 在控制台打印
    console.log("你好,javascript!");
</script>
</html>